Patent information:
| Patent: | Utility 1,468,947 |
| Patented: | September 25, 1923 |
| Applied: | April 18, 1921 |
| Title: | Furnace for Decorating Ceramic Ware |
| Description: | Kiln for firing porcelain spark plug insulators |
| Category: | Manufacturing |
| Assigned to: | Jeffery-Dewitt Co. |
Patentee Information:
| JEFFERY, Joseph A. | Detroit, MI |
Class and subclass information:
| Class: | 432 | HEATING |
| Subclass: | 83 | WITH WORK COOLING STRUCTURE; Work heat removed through heat transmitting wall; |
| Class: | 432 | HEATING |
| Subclass: | 1 | PROCESSES OF HEATING OR HEATER OPERATION; |
| Class: | 432 | HEATING |
| Subclass: | 92 | COMBINED; |
Known specimens:
| None known |
Drawings:
Page 1 |